メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.058768284439 34.8806239721042, 137.05810661512 34.8806407823544, 137.058096632209 34.8803830753685, 137.058064876161 34.880145138458, 137.05798857284 34.8798003933826, 137.057924751329 34.8795416521645, 137.057786902219 34.8789477449339, 137.057580501595 34.8782196094572, 137.058318624487 34.8782056181915, 137.058552556215 34.8794845982389, 137.058655865295 34.8800117779899, 137.058768284439 34.8806239721042)) ^^http://www.opengis.net/ont/geosparql#wktLiteral